PSYC62H3 Lecture 1: PSYC62 chapter 2
Document Summary
Neurons: cells in the nervous system that receive and transmit information to other neurons. Glial cells: cells that support the function of neurons. The membrane of dendrites and the dendritic spine contain receptors that the neurotransmitters can activate. The overall coverage of dendrites for a neuron is called the receptive area. The more dendrites a neuron has, the more input it can receive from other neurons. The axon terminal contains and releases neurotransmitters. Interneurons: neurons with the soma and axon found within the same structure. Sensory neurons are afferent where as motor neurons are efferent. There are three different types of glial cells: oligodendrocytes: produce myelin (insulation) around the axon in the cns. In the pns schwann cells produce myelin: astrocytes: help form the bbb facilitating neuronal function and response to injuries, microglial: removes normal cellular waste from neurons and glial cell. Gilosis: the swelling of glial cells in response to injury.
